The description of the item 6909190030 of France HScode: Ceramic wares for chemical or other technical uses (excl. of porcelain or china, articles having a hardness equivalent to >= 9 on the Mohs scale, millstones, polishing stones, grindstones and the like of heading 6804, refractory ceramic goods, electrical devices, insulators and other electrical insulating fittings) : Supports for catalysts, consisting of porous cordierite or mullite ceramic pieces, of an overall volume of not more than 65|l, having, per cm$2|of the cross-section, not less than one continuous channel which may be open at both ends or stopped at one end